Improvement in doors for elevator-hatchways



2 sheensshveen 1.

D. P. VAN' GOTT. Door for Elevator Heptohways. N0.196',317.

Patented0t. 23,1877.

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D. P. VAN GOTT. Door for Elevator Hatchways. 'No.196,317v.

Patented Oct. l23, 1877.

N. PETERS. PHOTLITHoGRAPHER, WASHINGTON. D C,

NITED STATEs PATENT OFFICE DANIEL I). VAN GOTT, OF BROOKLYN, NEW YORK.

IMPROVEMENT IN DOORS FOR ELEVATOR-HATCHW-AYS.

Specification forming part of Letters Patent No. 196,317, dated October23, 1877; application filed July 27, 1877.

To all lwhom it may concern:

Be it known that I, DANIEL P. VAN GOTT, of Brooklyn, county of Kings,and State of New York, have invented certain new and useful Improvementsin Doors for Elevator- Hatehways, of which the following is a full,clear, and exact description, reference being had to the accompanyingdrawings, and to the letters of reference marked thereon.

Figure l is a perspective view, showing the location and arrangement ofthe doors in an elevator-hatchway, together with the position which theoperating ropes or cables assumes when the doors are down. Fig. 2 is asectional view, showing' the door as made of two plates, separated bydivision-strips, to form air-tight or fire-proof compartments. Fig. 3

is a perspective view of the upper door detached from the hatchway,illustrating the location of the operating-ropes and the slides when thedoor is down or closed. Fig. 4 is a plan view of an upper door, designedfor a hatchway, in which the ratchet or guide-posts are placed in thecorners, the dotted lines indicating the position which the ropes andslides assume when the door is being elevated.

Like letters in all the figures refer to corresponding parts.

The object of my invention is to produce a simple and effective door forclosing the hatchways of elevators, such as are commonly used in hotels,warehouses, &c., and to provide a simple method of opening and closingthe same.

To accomplish this the invention consists in a peculiar manner ofoperating the slides which close the spaces between said door and thehatchway, and in certain details of construction and arrangements ofparts, all of which will be first fully described, and then pointed outin the claims.

The desirability of a door of some kind in this particular location hasbeen sufficiently established by the well-known fact that the hatchwayforms a flue or draft-chamber, and in the event of a iire in thevicinity of the lower portions of said hatehway induces the flames toascend very rapidly.

I propose to place a door at each landing, or at such other convenientpoints as may be preferred. If at each landing, they maybe made to serveas platforms, upon which remen and others may stand and for this reasonthey are made to open upwardly, so that there will be no danger of theirbeing opened by the weight of any one standing thereon. They (the doors)are made of wood, principally because it is contemplated using a seriesof them, and it is desirable that they be made as light as is consistentwith their necessary strength. If of iron they would be too heavy. Tomake them iireproof they may be tinned over, and air-chambers leftbetween the upper and lower plates.

In Fig. 2, A is the upper and B the lower plate of the door, separatedby the divisionstrips C C, Snc., into as many compartments or chambersas may be convenient, care being taken to leave room for the slides andconnected mechanism to be operated without interference. These chambersshould be made air-tight, and may be filled with plastenofparis,asbestus, cement, or any other non-conducting medium, as indicated at D.A

A hatchway having only two of my improved doors applied is chosen assuflicient to illustrate the principles governing the operation of saiddoors. If a greater number be employed, corresponding arrangements foreach door are, of course, made.

The ratchet or guide posts for the elevator are variously placed in thehatchways, and prevent makin-g the door of equal area with suchhatchway. It is, therefore, necessary to provide a suitable means forclosing the aspace necessarily left at the sides of the doors, in orderthat the flue may be effectually closed.

I employ two slides, E E, which lit into recesses in the edges of thedoors, and are capable of being thrust outwardly or drawn inwardly bymeans of the attached arms F running toward the centers of the doors.

If the ratchet-posts G be placed as in Fig. l, then the slides aresuitably out away, so that they will iit about said posts when thrustoutwardly; and if corner-posts be employed, as in Fig. 4, thencorrespondingly suitable iittin gs are made. A

From the arms F eyes or staples project up through the upper plate, andmove backward and forward in slots cut to receive them. These eyes serveto connect the operating cables or ropes with the arms,'through themedium of appropriate sheaves.

` Vto rise.

Q. YY 196,317

; The ropeor cable I-I, whichservesto elevate Y the floors,1asses from awindlassfvv, located Y below the lower door, ulithrcugh the Yiiooring Yat 1a, in Y rear i of Vthe hinges YI, thence forward flooring Vat thatpoint-,1 and through Vsheaves Ycorresponding-to those upon tliedoorbelow.

Iirom Athe :last door of the series the cable is i carried and attachedYto a Vpoint over the hinges Y of saiddoor.V Y The arms F 'F are of suchlength.

that wher-r the slides are thrust outwardly theV sheaves are separated,as indicated in lig. l. Y

The several doors of the system being closed,V to open them forthepassage of5 the elevatori the Vwindlass IN is turnedV soi as to wind upthe rope H.

Y strain uponsaid rope from the point a Vto theV Y central sheave o onthe `lower' door, causing the rope to straighten out between these :twoY i points, as indicatedby the dotted line Fig.

/i-,Y and therebydraw'theslides E E on said Y Ydoor withinthe spaceprovided for: them,Y :and

Y Y out of the way ci? the ratchet or guide posts.A A

' This operation Iwillirst bring a This door is thenV gradually brought.to Y an elevated position by the continuousiturning of the windlass,and, when elevated, the rope up on A the top'of the second'door'isstraightened out,

its'slides drawn inwardly, and it commences All thc'doors :ot-Ithosystem willi be operated iin a simil ar manner, their movements Y :beingsuccessive, one at a time, from the'lower tothe upper one.V

To lower or close the doors the wmdlass is released, and they (thedoors) commence to drop down, the top one being closed first, the nextone below it next, and so on until they are all closed.

From this arrangement and operation it will be apparent that the slidesare drawn inwardly by a positive motion communicated through theoperating-cable.

To thrust these slides outwardly by a similar positive and effectivemeans whenever the doors are closed is the object of the next feature ofthe invention, and this is accomplished by the following simple means:Two sheaves, d d, are secured to each door, at a little distance beyondthe staple-slots. A second cable, H1, is attached to the arms or staplesupon the arms F F of the upper door, and is then carried through thesheave d backward to a point, e, where it passes through the door, andthence similarly through the staple, or sheave upon the staple, in thenext door below. After passing through the sheave d upon the lower doorit is made fast to said door at a point and in such a manner as that itshall be drawn taut when the doors are closed and the slides thrustoutwardly. New, when the doors are elevated, this rope H is, of course,slackened and the slides permitted to be drawn in, as previouslyexplained. lVhen they (the doors) commence Y sired: positive to descend,the upper one being closed; first, the'strain upon HY' :is -sufcient toVdrawY Vthe `slides outwardly vtotheir proper position 5 Vand Y Y Y Y Ythe rope being Vattached to some point: of the Y Y Y Y lowermost door,th e slides Vthereoi =are similarly Y Y pushed or Yratheri pulledoirtward Y at theV time i V when the door Yisinally located. VFrom thisV;

1 arrangement I am: enabled Vto produce the .de- V Y V and automaticmotionin the slides. Y Y Y Y Y Y Y ,Thesheavels :employed may beYoi'anysuita- Y Y i A Ylile'pattermand Vthecable maybe made of V wire orchain, or .it may be of rope saturated Y -Y Y Y Y with someclremicalwhich will render -it Yii-re-V Y Y A. proof.: Y In'the event of aiiire'i-t will not .ordi-Y narily be desired to openthe doors after theyhave been closed, so that anydamage 'to Vthe Y Y ropes underV the abovearrangement will not .Y Vhave any Vten'denicy Vtodisarrange either the Ydoors or kthe closing slides.Y Y Y Y Y Y Y Y Y Y Y i Y f The slides maybe variously arranged te eor- Y respond with the character oii thehatchway; Y Y and the doorszmay be; made Y double,if desired,

instead of single, asin the several figures.V

:The simplicity and durableV charactcrofthe Ycon'trivance asabovedescribed, aswell asitsV non-liability to. get out oiorder, are featuresY Y Y.

' which it is believed will recommend: the sys- Y tcm for :use above anyother now known tome. Y Y

Having thus fully described my invention, Y Y

what I claim Yasinew, and Vdesire to :secure'by YLetters'PatenirYis-eV YY. Y Y Y Y 'El'.Y In combination with-the closing-slides at- Y Y tachedtoi a door: for an'elevatorfhatchwa the Y Y operating-rope passing fromthe rear of r said Y Y Y door towardY its ii'ront,and through suitable Ysheaves connected with said slides, the arrangement being such as todraw in said slides when the rope is straightened, as and for thepurposes set forth.

2. In combination with the slides adapted to close the space between anelevator-door and its hatchway, a rope or cable attached thereto, andadapted to thrust said slides outwardly when the door is closed,substantially as explained.

3. In combination with slides E E, a rope, H, connected therewith andwith the doors, substantially as set forth.

4. In combination with slides E E, adapted to be drawn inwardly by arope or cable, H, a second rope or cable connected with said slides andadapted to force them outwardly, in the manner shown and described.

5. The slides E E, having arms and sheaves applied thereto, the ropes HH', and windlass W, the whole being combined to operate in the mannerand for the purposes explained.

In testimony that I claim the foregoing I have hereunto set my hand inthe presence of two witnesses.

DANIEL I). VAN GOTT.

Witnesses JAMES D. SINGLAIR, Josnrn MCOANN.

